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Re: SVGT1.2: Usage of currentColor in animations

From: Dr. Olaf Hoffmann <Dr.O.Hoffmann@gmx.de>
Date: Wed, 9 Jan 2008 12:52:03 +0100
To: www-svg@w3.org
Message-Id: <200801091252.03445.Dr.O.Hoffmann@gmx.de>

If color itself is animated as in animate-elem-85-t it will not be sufficient
to pass the test, if the currentColor is only determined at the beginning
of another animation. It has to be determined any time, the value
is needed, if color is changed somehow. I think, this behaviour can 
already be determined from the property name, it is currentColor and
not pastColor or futureColor or something like this.
For example in the bottom subtest of animate-elem-85-t the resulting
color changes in a quadratic dependence, because both fill and color
are animated and currentColor is the to-value for fill.

This is somehow similar to the behaviour of to-animations with 
underlying animations, obviously not really easy to implement, but
for any example it is precisely testable, whether this is implemented
correctly or not. And currently, I think it is risky for authors to rely on
such more complex animations unfortunately.
Received on Wednesday, 9 January 2008 12:08:45 UTC

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